Okay so the premise of this film is a girl that is being stalked be a man and no matter what she does he eventually kills her, then she wakes up and lives the same day over and over. The plot twist is that the girl is actually the murderer that has died and is in hell, experiencing what it is like to be the victim of his own crime.
Quote from Wikipedia:
“In the end, it is revealed that Duke Desmond’s soul has been occupying Claire’s physical body the entire time and he is in Hell reliving the brutal murder of Claire over and over again as eternal punishment. Just before the end credits, Claire again awakens in the convenience store.”
If you think that this is the movie you are looking for, then please select my answer above as Best Answer, there is an option for that.